Depending of the lock in your door, you have to choose a specific version of the Danalock V3 - the EURO, SCANDI or US version. If you don't know what type of lock mounted in your door, the guide might help you out*
Know by the drop-like shape, the EURO cylinder is very common to European contries. It's operated with a thumbturn or a key on the inside.
Choose Danalock V3 EURO
Oval-shaped and very similar to the EURO profile cylinder. Most commonly used in Scandinavia.
Choose Danalock V3 SCANDI
Similar to the Scandinavian oval. It's operated with both a thumbturn and key on the inside.
Choose Danalock V3 SCANDI
This type of lock is considered to be the most common to America.
Choose Danalock V3 US
* This just act as a guide. If you are in doubt of the type of cylinder used in your door lock, you can contact a locksmith or ask the lock manufacturer for advice.